first of all dont add the whole bottle the motor will be very short lived. secondly you want to find gas line antifreeze that does not have methal hydrate in it. you want isopropanol i have no idea how to spell it lol. thirdly a whole bottle treats 65 liters so for a 1/3 of a tank i would put about 1/4 of the bottle in

 

To me if it is having a hard time starting I would be pulling the carbs and cleaning them. Sorry I never use that stuff, I think its a waste of money on a small 2 stroke, I put it in my trucks now and then as we get temps up to -30 C easily for months and crazy enough we do ride in it.

We never have problems with sleds starting within my group of guys I ride with.

Water will collect in the bowls if left for a while and dilute, bad fuel gives the same effect. To me I would find some 91 run a tank of that then go back to 87, clean the carbs and set the floats, pilot jets tend to clog up over time also and ice easily freezes inside.

Thats what I would do anyhow.

 

Not sure if you guys have ethanol fuel up there but if I were you I would get all of that gas out of your sled and fill with new gas.

That 3 or 4 gallons of gas that was sitting in the sled for 2 years could have seperated badly and have a ton of moisture in it.

I doubt when you added more fuel to it will fix the old gas.

I believe there is really no need to add drygas anymore to fuel as it already has 10% alcohol in it anyways.

 

Out of curiosity, is there a sensible way to empty the tank on this machine?

 

Siphon hose. Mine is a clear piece of fuel hose about five feet long with two feet of coat hanger in the end to get it to the bottom of the tank. If you have compressed air you can presurize the tank to get the fuel to start siphoning insted of sucking fumes. I agree with TwoRevs, if you are still having issues with the sled it would be wise to go through the carbs.

 

With the ethanol in the gas, isn't the gs line anti-freeze obsolete these days?

 

The compressor worked beautifully, twice. I used the probe to discover there are two bottoms to the tank (like saddle bags) so I started one and then the other with a tiny bit of air through a crumpled rag at the top.

About 25 litres of old gas extracted and none spilled. I added the remaining gallon of fresh 87 and ran it around the field a bit. Tomorrow the machine will climb onto onto my flat bed trailer for a trip to the service station for a tank of 91.

Stealth Bomber, thank you for the instructions.

 

TwoRevs:

I doubt when you added more fuel to it will fix the old gas.

You were right insofar as I didn't know how much old fuel there was in the tank. The gas gauge is the same model as the one on the tank of my Polaris Ranger, and I don't think it gets near the bottom of the tank.

I expected to siphon out 1 gallon, but I found closer to 6.

I'll fill it with 91 as my next step.

Thanks.

 

I had a similar sounding problem with an Indy 500 I just sold. Ends up the fuel pickup hose inside the tank had broken off at the fitting and the tank had to be over half full to pull any fuel. It was an easy fix once we peeked in the gas tank with a flashlight so we could see what was going on. Also, one of my best buddies fried a piston in his Indy 700 because he had a bunch of stabilizer in the tank and he ran the sled hard before he topped of the gas tank... If you use any of sort of fuel additive I would be careful with that stuff. Ya his sled isn't stock, but still...

 

Not sure if you guys have ethanol fuel up there but if I were you I would get all of that gas out of your sled and fill with new gas.

That 3 or 4 gallons of gas that was sitting in the sled for 2 years could have seperated badly and have a ton of moisture in it.

I doubt when you added more fuel to it will fix the old gas.

I believe there is really no need to add drygas anymore to fuel as it already has 10% alcohol in it anyways.

X2

And as steathbomber suggested go threw your carb's,

Adding new fuel to old fuel is not a cure

I also agree with not using an additive,

 

So I really have to do the carbs, eh? Just find a set of instructions and follow'em?

I have fuel line clamps and air, plus lots of tools.

Any things I should definitely avoid?

 

Also, one of my best buddies fried a piston in his Indy 700 because he had a bunch of stabilizer in the tank and he ran the sled hard before he topped of the gas tank...

Dang, how much did he have in there?

 

Dang, how much did he have in there?

He won't admit it. He was probably lucky it only cost him one piston. It could have been much worse. The guy that pulled the top half of the engine for him said it looked familiar...

 

With the ethanol in the gas, isn't the gs line anti-freeze obsolete these days?

Yes.

 

I've watched quite of few of this guy's videos and he seems credible, but his gas-line de-icer advice may be a bit unusual.

In fairness, the guy breaks a lot of equipment and then fixes it, so it might be like asking safety advice from a woodworker with a few missing fingers.

 

Let me share a real world test I have done with my 2010 Tundra, 87 octane with 5% Ethanol and using Shellbourne Fuel Enhancer.

 

Just a personal thing i think. I grew up as a kid and have always used this stuff because its what my dad taught me how to whe n iwas young. Still put a half bottle of it per full tank and never had an issue either way and he had over 10,000km on his old 500ss without a rebuild so who knows. might do something might do nothing